Chaeles w



(No Model.)

0. W. HUNT.

CHAIN BELT.

Patented Feb. 28, 1888.

N. PETERS. Phow-uma n hqr, Wnhingmn nc.

UNITED STATES PATENT Crricn.

CHARLES W. HUNT, OF WEST NEWV BRIGHTON, ASSIGNOR TO THE C. W. HUNTCOMPANY OF NEW YORK, N. Y.

SPECIFICATION forming part of Letters Patent No. 378,686, dated February28, 18853.

Application filed December 8, 1887. Serial No. 257,280. (No model.)

To aZZ whom it may concern.-

Be it known that I, CHARLES WV. HUNT, of West New Brighton, in thecounty of Richmond and State of New York, have invented an Improvementin Chain Belts, of which the following is a specification.

This invention relates to that class of chain or link belts that aremade to run over pulleys that are not recessed or provided with pointsfor the links; and the present improvement is for lessening the risk ofthe belt slipping upon the pulleys. The links are preferably of leatheror slightly-yielding material; but they may be of metal. The pulleys aregrooved peripherally with V-shaped grooves adapted to receive into eachgroove one or two lines of the links, and the edges of the links arebeveled to correspond to the inclined sides of the grooves, .so that thetension upon the belt tends to wedge the links in between the inclinedsides of the grooves, and thereby the frictional contact is greatlyincreased.

In the drawings, Figure 1 is a section of the belt and of one side ofthe pulley. Fig. 2 is a similar view,in which the grooves correspond inwidth to the thickness of two links. Fig. 3 is a side view showing thelinks of part of a belt, and Fig. 4 is a plan of the same.

Each link a is cut out of suitable materialsuch as sheet metal, or,preferably, leatherand of the desired length and with the necessaryholes for the passage of the connectingholts b, and the links are laidside by side and lapping upon each other and connected up, so that thebelt is of any desired width and of a thickness corresponding to thewidth of the links, as has heretofore been done in chain or link beltsmade of leather; but instead of the pulley 6 having a smooth surface andthe edges of the links being fiat I bevel the edges of the links at iand groove the pulley or wheel peripherally, as at 0.

Where the peripheral grooves are the same width as the thickness of theleather or other contact with the pulley are beveled in each direction,so that each link will set in one groove, as illustrated in Fig. 1; butwhere the grooves are. of a width corresponding to the material, theedges of the links that are in 4 thickness of two links, then the edgeof each link is only beveled in one direction and the links are placedtogether in pairs, as shown in Fig. 2, so that two lines of links settogether into one groove. In either instance the frictional contact ofthe belt with the pulley is augmented by the wedging action of the linksas they draw into the beveled grooves.

It is preferable to cut out the links with com cave edges approximatingthe curvature of the pulley to which they are adapted, as shown in Fig.8. The links may have the bevels on both edges, as seen in Fig. 2, oronly on one edge, as seen in Fig. 1.

I do not claim'a pulley for a belt with V- shaped grooves around itsperiphery; neither 2. The chain belt composed of flat links per- 7forated and united by cross-rods,the links having the edges that comeintocontact with the pulley beveled in opposite directions and the linksplaced together in pairs, so that the beveled edges of two lines oflinks are adapted to pass into one V-groove upon the pulley, substantially as set forth.

Signed by me this 6th day ofDecember,1S87.

CHAS. W. HUNT.

Witnesses:

GEO. T. PINCKNEY, VVILLIAM G. Morr.

